Starting from the premise that supreme authority requires justification, and pointing out that from medieval times the authority of both Church and State has been deemed as delegated from God, Mr. Cameron investigates the relation between secular and religious authority and the role of the individual moral agent.

If the highest authority derives from God, how are we to evaluate the claims of popes, kings, and the State? The individual, through witness of the Spirit and his own moral perceptions, has the right and obligation to evaluate the institutions and commands of authority; Mr....